Stainless steel plum head screws are fasteners that combine plum head drive design and pan head shape. They are widely used in many industries due to their high corrosion resistance, anti-tampering characteristics and high strength performance.
Main application areas: construction and steel structure engineering
Light steel structure: used for fixing color steel roofs, glass curtain walls, stainless steel doors and windows, adapting to corrosive environments such as high humidity and acid rain, especially suitable for coastal or chemical pollution areas.
Integrated housing and containers: Pre-drilling design improves efficiency during rapid construction, and weather resistance can extend the life of the structure.
Industrial equipment and machinery manufacturing are used for heavy machinery: such as injection molding machines, conveyor belt components, stainless steel materials (such as A2 304) provide high strength and high temperature resistance (up to 800°C), suitable for high load conditions.
Chemical and energy equipment: used for chemical storage plants, power plant pipeline valves, acid, alkali and sulfide corrosion.
In electronic appliances and precision instruments, it is used to fix the internal frame of smartphones and tablets. The plum blossom design prevents slipping and adapts to the needs of miniaturization. In precision instruments, it is used in medical imaging equipment and communication sheet metal. The stainless steel material avoids electromagnetic interference and complies with RoHS environmental protection standards.
Medical and food industry
Medical equipment: Surgical instrument housings and sterile equipment connections must be corrosion-resistant and easy to clean. 304/316 stainless steel meets medical-grade hygiene requirements.
Food processing equipment: Tamper-proof design (such as countersunk plum blossom screws) ensures equipment safety while withstanding high-temperature disinfection environments.
Transportation and energy facilities
Rail transit: High-speed rail connectors and container shelf fixation, high mechanical strength (above grade 8.8) and fatigue resistance ensure reliability.
Wind power generation: used for tower and blade fixation, resistant to salt spray corrosion and extreme climate, and extended equipment maintenance cycle.
Public facilities and tamper-proof scene electrical equipment: such as outdoor lamps and distribution boxes, tamper-proof plum blossom design (special tools are required for disassembly) to improve safety.
Commercial facilities: For public seats, billboards and other parts that require frequent maintenance, the Torx screws are reusable and the grooves are wear-resistant.
Technical features and advantages
Material and corrosion resistance
Made of A2 304/316 stainless steel, containing 18% chromium and 8% nickel, it is resistant to acid rain, salt spray and chemical corrosion and has a long service life.
Surface treatment can be selected for polishing, Dacromet or Teflon coating to enhance corrosion resistance 25.
Drive structure and anti-theft
The Torx design reduces the risk of slipping, and special tools are used to achieve high-torque installation, with significant anti-disassembly effect.
Some models support tamper-proof design (such as countersunk structure), which is suitable for security-sensitive scenarios.
In terms of process and adaptability, it supports multiple specifications (M2-M10), half-thread/full-thread threads, and is compatible with metric and imperial standards. It can also be mass-produced through cold heading process, with high efficiency (60-200 pieces per minute) and controllable costs. It is also highly adaptable to the environment and can withstand high temperatures (-50°C to +800°C), suitable for extreme temperature environments, such as automotive engine parts or high-temperature equipment.
It has excellent moisture resistance and is suitable for humid scenes such as photovoltaic brackets and docks.
Selection suggestions
Corrosive environment: 316 stainless steel or surface-plated models are preferred.
High strength requirements: Carbon steel materials that have been heat-treated (such as carburizing) are selected, and the strength can reach 12.9.
Anti-tampering scenario: countersunk hexalobular slot design is used, and a special drive tool is used
